diff --git a/README b/README
--- a/README
+++ b/README
@@ -22,6 +22,13 @@
 hasktags --ignore-close-implementation --etags .
 ```
 
+Both formats:
+```bash
+hasktags --ignore-close-implementation .
+```
+
+*NB:* Generating both tags generates a file called `TAGS` for Emacs, and one called `ctags` for Vim.
+
 ## HOWTO (USING TAG FILES):
 ### ViM
 ```viml
diff --git a/hasktags.cabal b/hasktags.cabal
--- a/hasktags.cabal
+++ b/hasktags.cabal
@@ -1,5 +1,5 @@
 Name: hasktags
-Version: 0.69.3
+Version: 0.69.4
 Copyright: The University Court of the University of Glasgow
 License: BSD3
 License-File: LICENSE
diff --git a/src/Hasktags.hs b/src/Hasktags.hs
--- a/src/Hasktags.hs
+++ b/src/Hasktags.hs
@@ -180,7 +180,7 @@
   when (mode == BothTags)
        (do etagsfile <- getOutFile "TAGS" openFileMode modes
            writeetagsfile etagsfile filedata
-           ctagsfile <- getOutFile "tags" openFileMode modes
+           ctagsfile <- getOutFile "ctags" openFileMode modes
            writectagsfile ctagsfile (ExtendedCtag `elem` modes) filedata
            hClose etagsfile
            hClose ctagsfile)